#define not working with my input

[deadfolx]

Code isn't fully complete but I don't want to continue when my #define isn't even working, what am I doing wrong here? Please help, and go easy on me, this is my first code ever. Thanks!

#define PI 3.14159
#include <iostream>
using namespace std;

int main()

{

int answer;
cout << "The area of a circle is" <<PI>> "* radius * radius"<<endl; //This line is a calculation and cannot be done until you read in the radius from the user, i.e. you cannot do a calculation until

//Ask the user for the radius of the pie in inches.
cout << "What is the radius of the pie in inches?" << endl;
//read in the radius

//Ask the user for the length of the shelf.
cout << "What is the length of the shelf?" <<endl;
//readin the length

//Ask the user for the width of the shelf.
cout << "What is the width of the shelf?" <<endl;
//read in the width

//Calculate the area of the pie.

//Calculate the area of the shelf.
//ex: sum = num1 + num2; example of a sum calculation

//Calculate the total number of pies that can fit on the shelf.
cout << "What is the total number of pies that can fit on the shelf?" <<endl; //This is not an output statement this is also a calculation, your answer which should be the area of your shelves
//divided by the area of your pies
system("pause");
//Display a message telling the user how many pies can fit on the shelf
cout << "The number of pies that can fit on the shelf is" << answer << endl;
return 0;
}

[GCDEF]

Your #define is working fine. You have a little issue here though

cout << "The area of a circle is" <<PI>> "* radius * radius"<<endl;

[deadfolx]

Thanks for the reponse. Maybe it's my compiler, I'm using DevC++ 5.11. When I type in #define PI 3.14159 it all stays once color when I thought "PI" was suppose to be a different color, I don't know. Still says it's incorrect, like it's not acknowledging my #define.

[GCDEF]

Once I changed the >> to << it compiled cleanly for me using VS 2012.

[deadfolx]

Guess I'll be trying a new compiler, thanks a lot GCDEF

[2kaud]

When posting code, please use code tags. Go Advanced, select the formatted code and click '#'.

Still says it's incorrect, like it's not acknowledging my #define.

Have you changed your code as per GCDEF's post? What is incorrect? What error message is the compiler displaying?

[GCDEF]

Possibly that compiler has something else already defined as PI. Try calling it something else. The exact error message would help.

[2kaud]

Guess I'll be trying a new compiler, thanks a lot GCDEF

If you are using Windows, have a look at MS VS 2013 community edition. This is free. See https://www.visualstudio.com/downloa...sual-studio-vs

[deadfolx]

Excellent thank you. My apologies for not using a tag, I'll do so in the future for sure. As far as the code is concerned, it was saying that there was no given value for "PI" and highlighted the entire line in red.

[deadfolx]

Fixed it guys, thanks again

[GCDEF]

Fixed it guys, thanks again

What was it?

[deadfolx]

What was it?

it was a stupid mistake...I put the #define in the wrong spot and some other careless mistakes that I looked over. And devc++ was a P.O.S compiler, VS is much better, thanks again GCDEF